David J. Larkins

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Brampton, CA

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Patents Grantslast 30 patents

Information Patent Grant
Shut-off seal for a rotatable shaft
- Patent number 5,303,933
- Issue date Apr 19, 1994
- Robbins & Myers, Inc.
- David J. Larkins
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Shut off seal about a shaft of a device having a side entry into a...
- Patent number 4,878,677
- Issue date Nov 7, 1989
- Hydrochem Developments Ltd.
- David J. Larkins
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL